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G.C-. MGCULLOUGH.

PIRE 0R POLICE TELBGRAPH.

- No. 423,487. Patented Mar. 18.. 1890.

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No. 423,487. Patented Mar. 18', 1890.

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G. C. MGCULLOUGH. PIRE 0R POLICE TBLBGRAPH.

No. 423,487. A Patented Mar. 18, 1890.

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FIRE 0R POLICE TELEGRAPH.

N0. 423,487. Patented Mar. 18, 1890.

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UNITED STATES PATENT OFFICE` GEORGE C. MCOULLOGH, OF RICHMOND, INDIANA,ASSIGNOR OF ONE-THIRD TO JOHN B. DOUGAN, OF SAME PLACE.

i FIRE OR POLICE TELEGRAPH.

SPECIFICATION forming part of Letters Patent No. 423,487, dated March18,11890.v

' Application filed February 5, 1889. Serial No. 298.725. (No model.)

To aZZ whom it may concern:

Be it known that I, GEORGE C. MoCUL- LOUGH, a citizen of the UnitedStates, residing at Richmond, in the county of Wayne and State ofIndiana, have invented certain new and useful Improvements in Fire andPolice Telegraphs; and I dohereby declare the following to be a full,clear, and exact description of the invention, such as will enableothers skilled in the art to which it appertains to make and use thesame. `My invention relates to tire and police telegraph systems; and itconsists of an improved repeater for use in such systems, whereby abreakin any circuit connected therewith willbe instantly known in thestations of all the circuits, and said repeater also .insures thecorrect transmission of the signals from one circuit to all the otherstations, notwithstanding breaks in the same.

In the drawings which form a part of this application I have illustratedone form in which I have contemplated embodying my invention, and saidinvention is fully disclosed in the following specification and claims.Y

In the drawings, Figure 1 is a side elevation of my improved repeater.Fig. 2 -is a plan View ofthe same. Fig. 3 .is fa'diagrammatic viewshowing the circuits.V @Fig 4 is a detail view offone of thecircuit-breakers employed by me in my repeater.V Figs. 5 to 8 are detailviews of parts of the mechanism. Fig. 9 is a View of a portion of thedevice, showing the manner in which the trippinglevers overlie thedetent; and Fig. 10 is a detail view showing the means for adjusting oneof the parts of the mechanism.

In the drawings, E is the bed-plate of the mechanism, `which issupported upon suitable posts c. This table is illustrated as being ofcircular form; but any other preferred form might be employed.. Thefrontof the table is providedwith projections c', which are supported attheir outer extremities by` posts c2. Upon the extremity of each ofthese projections is mounted in a suitable bearing a lever F in awellfknown way. The outer end of this lever extends slightly beyond theend 'of the projection c', and is provided with Yan armature g, belowwhich is an electro-magnet G.' I employ as many electro-magnets with myrepeater as there are circuits and connect desired manner, andanotherprojection f5 extends upon the other side of the lever. The projectionff has preferably an inclined side, as illustrated in Fig. 5, for apurpose hereinafter specified. l

In Fig. l the lever F is shown in its retracted position, or in theposition which it occupies when the circuit through magnet G is broken.Fig. 9, the levers F there being shown as overlying a detent O.

Beneath the table E, and supported by the posts e, is a plate H, andupon suitable posts la above table E is mounted a small table K. Acentral shaft L is mounted in suitable bearings .in plate H and table Kandpasses through table E. This Vshaft is provided with a pinion h belowthe table E, which engages thepinion of a weight or spring motor of ,anypreferred construction which is capable of imparting motion to thevshaft L.

At suitable distances around the shaft L, and ata convenient distance,from the same, are the circuitfbreakers M, which are mounteduponsuitable posts, and in such a manner that each circuit-breaker liesin a different horizontal plane. I employ one more circuitbreaker M thanthere are magnets G and mount them in any convenient position andrelation on the table E. Each of these circuit-breakers consists of ametallic or hardrubber cup of any preferred form and binding-posts m, toone of which is preferably attached a strip of elastic material m.Beneath the circuit-breaker is a lever m2, which is secured thereto by apivot passing through'the bottom of the cup. .To this pivot within thecup is secured the cam m3, which engages the exible strip in. Thebinding-post, which is The normal position is shown in IOC Vnot providedwith the llexible strip, has a contact-point extending to the `saidstrip, and preferablyat right angles to the same, and the cam is soarranged that a movement of the lever lfm2-will move the strip fm awayfrom the contact-point and break the circuit. A suitable spring m4,which may be a spiral spring, as shown, or any preferred form of spring,is employed to retain the elastic strip mno'rmally in contact with thecontact-point and to return it to its normal position after the circuithas been broken.

The shaft L is provided with a number of disks N equal to the number ofcircuit-breakers. These. disks are each provided with a recess n,extending from the periphery toward its center, and I prefer to makethese recesses quite deep and provide the'inner edge with aset-screw'for attaching the disk will: be in the recesses n of thedisks. "Whenv the shaft is rotated, vthe levers ong-will be deflected insuch a manner asto -break the circuit of allv the circuit-breakers andmake them again when t-he shaft has completed one revolution.

Upon s ome convenient portion of the bedplate or table E a lever O ispivot-ally supported-in a'suitable manner. The shaftl L is' providedwith an arm l in substantially the plane of this lever, the said armbeing rigidly J secured to the shaft and adapted to engage one end ofthe lever O. I may, however, em-

ploya disk having a notch'or recess to engage lever O, if I prefer. Thelever O holds the arm and the shaft from rotation. 'The opposite end ofthe .lever O is provided with a plate 0,'whichpreferably is of a steppedor notched form, as shown in Fig. 2, so as 'to provide a shortportion'for each of the projections f of thejarmature-levers F to restIupon. lThese projections neednot necessarily rest lupon the plate o, asit will be suti'cientl for them to be immediately above. A spring f4 isattached to the lever F and to some convenient projection from the .poste2, so as to permit of an adjustment of its tension. This spring willtend to draw down the inner end of the lever F when the circuit throughthe tripping-magnet G is brokenand the armature g released. Upon theportion e of the bed plate or frame at the side of lever F, opposite theprojections f and f2, isv a plate P, which is pivoted at one end to someportion-of the frame. The other end is provided 'with projection 19,having a sharp tapering ,idly secured to the shaft L. `are secured to asleeve r, which is provided thumb-screw Ffa-having a shoulder P3, by

which the position of the point p may be reg# ulated. When the leverF isreleased and is drawn down by spring f4, the projection f will depressthe plate o, which will elevate the opposite end of the lever Op'andrelease the arm Z, permitting the shaft L to revolve by means of itsactuating devices. As soon as the lever F has descended farenough tocause the arm Z to be disengaged, the tapering point of the projection pon plate P engages the projection f5 on'lever f, which` forces'theprojection f2 forward against the spring f 3 and retracts the projection f', there-` by releasing the plate o. A spring o restores plate oto its normal position, which depressesv the opposite endof the lever Oin time to engage'the arm Z and prevent the shaft L from making morethan one rotation. An adjustable stop o2, of any preferred construction,is employed to limit the upward movementof plate o, and a similar stop pis provided to.

above the plate o; but to insure accuracy the projection f may beprovided with an inlined face, as before described, and shown i ig. 5.

The shaft L extends above the table Kand is provided with fans R R,which serve to prevent too quick a rotation of the," shaft. Above thetable K is a disk S, which is rig- The fans R R at its lower extremitywith'a fiange fr', having peripheral ratchet-teeth. vAL caps isattachedto'the shaft above the sleeve fr by means of a pin or any otherv.preferred construction'.` The plate"'or diskfiS is provided Thisupward movement'is so IOO IIO

Wit-h Spring-rams engaging Athe teeth was shown in` Fig. 2. Beneath thetable yK is a disk T, rigidly secured to the shaftfL in any desiredmanner, and provided with a notch adapted tobe yengaged by a springpawlt when the shaft L is held in position' by the arml and leverr O. Whenthe shaft has madea revolution by means of the devices j-ustdescribechit will be stopped by `the lever O and held from rebounding bythe pawl t. The fans will, however, lie/permitted to rotate furtheruntil they are stopped by the resistanceof the air, the ratchet .merelyslipping pasty theppawls, andthe injurious strain j which would resultfrom stopping y the fans suddenly is thus avoided.y

From the foregoing description it'willbe seen that when' the circuitthrough any of the magnets G is broken the repeater will be op- I of thecircuit-breakers Will be broken and again made. Y

In employing my improved repeater iu a iire or police telegraphy systemI station the instrument at a central point, which maybe a separatestation `or it may be in an engine `house or police-station.

I provide as many magnets G as there are stat-ions or enginehouses inthe district in Whichthe system 1s used. V Each engine-house is locatedin an` alarm-circuit provided Withcall-boxes, and at the engine-houses'I preferably locate a recorder of any preferred construction'to registerthe alarm or signal in any of 'the Wellknown Ways.

In Fig. 3 I have illustrated the circuits employed in connection Withthe system in Which my improved repeater is to be used. A, B, and C areengine-houses or police-stations, at

which are located suitable recorders c b c,' which are connected at thecentral stationy with the repeater D by a circuit in which are Vlocatedfcall-boxes u, a, b b, c c, e, of the usual or any preferredconstruction. One Wire of each circuit is connected with thetripping-magnet G, which is used withl that circuit, the other Wirebeing attached to one of the circuit-breakers M, which is in turnconnected with the magnet G. As before stated, I employ an additionalcircuit-breaker, which is independent of the circuits through thecall-boxes. Through this circuit-breaker passes-a circuit in Which arelocated gongs d, one at'each engine-house or police-station.

v It-will be obvious that from the previous description if a sign al oran'alarm be turned in from one of the call-boxes in the circuit -inwhich enginehouse C is located the alarm will be recorded by theregister in engine-house C. NVhen the circuit is .broken in the callboxto make the first stroke of the alarm, the magnet G will :release itslarmature and the shaft L Willmake one rotation, thereby breaking thecircuits through engine-houses A and B and causing the registers thereinto record the first stroke of the alarm. At the same time the gong inengine-houses A, B, and C will each4 strike one-the {irst stroke of thealarm. This operation will be repeated .until the complete signal oralarm has been re'- ceived at each of the engine-houses on register andgong simultaneously. Y

If -a break v should occur in the circuit through station C the magnet GWould release its armature, the shaft L Would make one revolution, andthe gong ineach station sound a single strike, thus notifying thestations that a break had occurred, and at the central station it can bereadily determined which circuit is broken, as the.magnet.G, connectedWith the broken circuit-,Will not attract kitsarmature.

If any alarm should be turned in onhcircluit A or B While the circuit Cwas broken the register at station C would not record the alarm, but itWould be. received on the gong.

Thus it will be seen thatQb-y placing the, gong in Yan independentcircuit the alarm will alv `Ways be received, even though the circuitthrough the register 'should be broken.

I have shown and described asy'stem containing three engine-housesandone repeater.

I claim, and desire to secure by Letters Pat-l v I l. In a fire andpolice telegraph system, the combination, With a central station, ofindependent outlying main-line circuits, a station provided With a signal-receiver ingeach of said circuits, a repeater at the central stationconnected With each of said outlying circuits, and an independentcircuit connecting said repeater with a gong at each vof said outlyingstations, whereby a sign al Will be yrepeated at each station,notwithstanding a break in the scribed. Y

2. In a fire and police telegraph system, the combination, with acentral station, of Aindemain-line circuitthereof, substantially asdependentoutlying main-line circ.uits ca llboxes and a station providedWith a signalreceiver in each o f ,said circuits, a repeater at thecentral station connected with each of `said outlying circuits, and anindependent circuit connecting said repeater Witha gong ico at each ofsaidy outlying stations, whereby a -signal Will be repeated at eachstation, notwithstanding a break inthe main-line circuit thereof,`substantially as described.

3. Ina fire or police telegraph system, the

y combination, with central station, of outlying circuits having astation `and call-boxes in each, and an independent circuit connectedWitha gongat each of said outlying stations,

a circuit-breaker in the gongcircuit, and a circuit-breaker andtripping-magnet in each of the outlying circuits, substantially/asdescribed.

4. A repeater-for a central lire or police telegraph station havingcircuit-breakers for independent outlyin gcall and station circuits, anda circuit-breaker for a commoncircuit, an actuatingdevice for saidcircuit-breakers under tension, a detent for -said actuating device, andtripping-magnets in each of said call and'station circuitsfor`operatingf said detent, substantially as described.

5. A repeater for a central .iire or police IIO telegraph station havingcircuit-breakers for independent circuits, an actuating device undertension for said circuit-breakers, a detentfor said actuating device,and tripping-.mage

nets for releasing said detent, there being one more circuit-breakerthan tripping-magnets, substantiallyV as described.

G. In a repeater for a central station, the

combination, With a revolving shaft under of an armature-lever havingthe lever fpivf tension, of circuit-breakers arranged concenl otedtherein, having a projection engaging trically to said shaftincludingpivoted levers y having one end in operative engagement with the movablecontact'of said circuit-breakers, and projections on the said shaft forengaging the free ends of said levers, substantially as described.-

7. In a repeater 'for a central station, the combination, withaxrevolving shaft under tension, of circuit-breakers arrangedconcentrically to said shaft including pivoted levers having one endengaging the movable contact of said circuit-breakers, projections onsaid shaft for engaging the free ends of said levers, a dctent engaginga project-ion from said shaft, and a tripping-'magnet provided with anarmature-lever for releasing said detent, substantially as described.

8. The combination, with the revoluble shaft, a detent-lever, and atripping-magnet,

said detent-.lever, and another projeetion'extending beyond the edge ofthe armature-lever, and the pin p, substantially asdescribed.

9. A circuit-breaker consisting of an annular main body, twobinding-posts set at right angles to each other and having extensionsmeeting with-in the hollow body, one of said extensions being elasticand bearing against the other, and a lever having one end engaging saidelastic extension and the other end extending outside of the annularbody, sub stantially as described.

In testimony whereof I afx my signature in presence of two Witnesses.

Gnonen o. MooULLoUGH.

Witnesses:

JOHN L. YARYAN, WILLIAM A. BAUMER.

